5 Commits

Author SHA1 Message Date
Andrii Nakryiko
57428298b5 selftests/bpf: Prevent out-of-bounds stack access in test_bpffs
Buf can be not zero-terminated leading to strstr() to access data beyond
the intended buf[] array. Fix by forcing zero termination.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211124002325.1737739-12-andrii@kernel.org
2021-11-26 00:15:03 +01:00
Andrii Nakryiko
2fe256a429 selftests/bpf: Migrate selftests to bpf_map_create()
Conversion is straightforward for most cases. In few cases tests are
using mutable map_flags and attribute structs, but bpf_map_create_opts
can be used in the similar fashion, so there were no problems. Just lots
of repetitive conversions.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211124193233.3115996-5-andrii@kernel.org
2021-11-25 23:37:38 +01:00
Lorenz Bauer
7e5ad817ec selftests/bpf: Test RENAME_EXCHANGE and RENAME_NOREPLACE on bpffs
Add tests to exercise the behaviour of RENAME_EXCHANGE and RENAME_NOREPLACE
on bpffs. The former checks that after an exchange the inode of two
directories has changed. The latter checks that the source still exists
after a failed rename. Generally, having support for renameat2(RENAME_EXCHANGE)
in bpffs fixes atomic upgrades of our sk_lookup control plane.

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211028094724.59043-5-lmb@cloudflare.com
2021-11-03 15:43:08 +01:00
Lorenz Bauer
9fc23c22e5 selftests/bpf: Convert test_bpffs to ASSERT macros
Remove usage of deprecated CHECK macros.

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211028094724.59043-4-lmb@cloudflare.com
2021-11-03 15:43:08 +01:00
Alexei Starovoitov
edb65ee5aa selftests/bpf: Add bpffs preload test.
Add a test that mounts two bpffs instances and checks progs.debug
and maps.debug for sanity data.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200819042759.51280-5-alexei.starovoitov@gmail.com
2020-08-20 16:02:36 +02:00